PARIS (AFP) - Roger Federer, with the imposing burden of Rafael Nadal now lifted from his shoulders, struggled under the weight of Tommy Haas's challenge before winning a five-set French Open thriller on Monday. One day after four-time champion Nadal was sensationally beaten at Roland Garros for the first time, Federer, suddenly the favourite for a maiden French Open title, came close to joining the Spaniard at the exit door. But the former world number one survived to beat 31-year-old Haas 6-7 (4/7), 5-7, 6-4, 6-0, 6-2 and will now tackle old American rival Andy Roddick or Frenchman Gael Monfils for a place in the semi-finals. Meanwhile, Tommy Robredo kept Spanish hopes alive as the 16th seed reached his fourth quarter-final with a 6-4, 5-7, 7-6 (7/4), 6-2 win over Germany's 29th seed Philipp Kohlschreiber, the man who defeated fourth seed Novak Djokovic in the previous round. Later Monday, France's Jo-Wilfried Tsonga was hoping to make the quarter-finals for the first time, but was facing highly-regarded Argentine fifth seed Juan Martin del Potro. Federer, who came into his last 16 clash with German veteran Haas boasting an 8-2 winning record, was close to suffering his earliest Grand Slam defeat since losing in the third round here to Gustavo Kuerten in 2004.But the match turned when Haas, with a two-set lead, missed a chance to break in the eighth game of the third set which would have allowed him to serve for a famous victory. Federer, with one brilliant, inside-out forehand that landed just on the line, saved the break point and raced through the rest of the tie taking 14 of the next 16 games."I thought that shot I made was probably the first good shot I had hit the whole match," said Federer, the holder of 13 major titles and needing just a French Open to become only the sixth man to complete a career Grand Slam.Victory here on Sunday would also take him level with Pete Sampras on 14 Grand Slam titles, although the great American never won in Paris. "I knew the significance of it and I realised that if I came out of it I would look back on that shot as the one that saved me. It was a great feeling because I was in some trouble there." Haas agreed that the break point chance was crucial. "It was very close. It goes through your head that you could have served for the match. I wanted to play a good return, not too deep, but he hit the winner," said the former world number two. "You have to tip your hat to him. He went for it. It was too good and he got his reward." Robredo, who will face either Del Potro or Tsonga, will be playing in his fourth quarter-final, having also reached the last eight in 2003, 2005 and 2007. The 27-year-old, who is the last Spaniard left in the draw, has the most claycourt wins this season with a 25-6 record. In the other half of the draw, British third seed Andy Murray will tackle Chilean 12th seed Fernando Gonzalez, who withdrew from the men's doubles on Monday to protect his suspect ankle. Nadal's conqueror Robin Soderling of Sweden will meet two-time semi-finalist Nikolay Davydenko, the 10th seeded Russian. Pakistan enjoy excellent record S PERVEZ QAISER Runners-up in 2007 edition ** Beat Scotland by 51 runs at Durban ** Tied with India at Durban (India wins 3-0 in bowl-out) ** Beat Sri Lanka by 33 runs at Johannesburg ** Beat Australia by six wickets at Johannesburg ** Beat Bangladesh by four wickets at Cape Town ** Beat New Zealand by six wickets at Cape Town (semi final) ** Lost to India by 5 runs at Johannesburg (final) **Brett Lee is the only bowler to accomplish a hat trick in Twnety-20 international cricket. The Australian speedster achieved this feat by dismissing Bangladesh's Shakib Al Hasan, caught by wicker-keeper Adam Gilchrist, Mashrafe Mortaza, bowled, and Alok Kapali, leg before, on the third, fourth and fifth ball of his third over in the Super-Eight in the Twenty-20 World Cup at Cape Town on September 16,2007. PERFORMANCE IN TWENTY-20 CRICKET: Type P W L T N/R Success% In Twenty-20 matches 17 13 3 1 - 79.41 In World Cup 7 5 1 1 - 85.71 Highest innings totals: Score Opponent Venue Date 189-6 in 20 Sri Lanka Johannesburg 17-09-2007 171-9 in 20 Scotland Durban 12-09- 2007 165-4 in 19.1 Australia Johannesburg 18-09-2007 Lowest innings totals: Score Opponent Venue Date 141-7 in 20 India Durban 14-09-2007 152 in 19.3 India Johannesburg 24-09-2007 165-4 in 19.1 Australia Johannesburg 18-09-2007 Highest individual scores: Score Batsman Opponent Venue Date 66* Misbah-ul-Haq Australia Johannesburg 18-09-2007 59 Imran Nazir New Zealand Cape Town 22-09-2007 57 Shoaib Malik Sri Lanka Johannesburg 17-09-2007 Best bowling performances: Fig Bowler Opponent Venue Date 4-18 Mohammad Asif India Durban 14-09-2007 4-19 Shahid Afridi Scotland Durban 12-09-2007 4-25 Umar Gul Scotland Durban 12-09-2007 Stars to watch: Player M Runs AVG HS Wkts AVG Best Misbah-ul-Haq 15 422 52.75 87* - - - Salman Butt 13 282 25.63 74 - - - Shahid Afridi 16 195 13.92 39 22 16.59 4-19 Shoiab Malik 17 383 31.91 57 11 12.72 2-14 Umar Gul 14 2 2.00 2* 24 10.50 4-8 Sohail Tanvir 11 14 7.00 12 9 31.88 3-31